The article today about it says most are fine with the ESTA visa. So most likely is no issue especially as the PR tour was sorted quickly
120 people across different locations is no easy logistical feat.
Which is probably why the NRL should have been responding back in October when clubs were asking questions, instead of leaving it to the last minute.
For months, the NRL indicated to the clubs that players could travel to the US on an ESTA, which waives the traveller from needing a visa.
The Broncos sought their own travel advice while the other clubs were concerned about players being stopped and turned around by US customs officers. They had been asking for a definitive answer about visas since October 18.
There really is no defence for them ignoring it for 3 months and then suddenly changing advice 6 weeks out. There's a good chance that any players with a criminal record applying now, won't get it sorted out in time. They should have been starting it 6 weeks ago.